Nut-lock.



T. M. MILLS.

' I NUT LOGK. APPLIOATION FILED MAYB'T, 1908.

Patented June 8, 1909.

%////% ffi/a wi/lmwaw improve the construction of nut locks, and

THOMAS M. MILLS, OF SAN ANTONIO, TEXAS.

N UT-LOCK.

N 0. 924,259. Specification of Letters Patent.

Application filed May 27, 1908. Serial No. 435,280.

Patented June 8, 1909.

To all whom it may concern:

Be it known that I, THOMAS M. MILLS, a citizen of the United States, residing at San Antonio, in the county of Bexar and State of I Within the recess between the bolt opening 9 and the wall of the recess, is formed by radi- 55 ally tapered corrugations and consists of rounded lugs and intervening curved grooves.

Texas, have invented a new and useful N ut- The lug 4, which is arranged at one end of Look, of which the following is a specificathe split locking ring, extends outwardly tion. and isrounded and tapered radially to con- 60 The invention relates to improvements in form to the configuration of the corrugations nutlocks. of the ratchet face of the nut, and it is adapt- The object of the present invention is to ed to interlock with the same with sufficient force to effectually prevent the nut from accito provide a simple and com aratively inexfrom accidentall to permit the sald n moved and replaced, injurin drawing, hereto aplpended various 0 tail View of th responding parts i drawing.

The nut lock, which is designed particularly for use on rail joints, comprises a nut 1 having a ratchet face 2 and a split locking provided with a lug 4 for engaging the ratchet face of the nut and having a arranged to fit of a fish held agai ring 3 pensive one designed articu arly for use on rail joints, and capa venting the nuts of the bolts of rail joints y unscrewing, and adapted uts to be readily rewhen desired, without echanism.

er objects in view, the

ke numerals of g the locking In With these and 0th invention consists in novel combination of described, illustrated and points parts hereinafter fully in the accompanying (1 out in the claims it being understood that anges in the form, proportion, size d minor details of the scope of the claims, may be resorted to Without departing fro ficing any of the advantages of the invention.

In the drawin m the spirit or sacrig:Figure 1 is a horizontal sectional view of a portion of a rail joint prolock, constructed in acthis invention.

view, taken substantially f Fig. 1.

within the elliptical opening 6 plate 7, whereby the locking ring is be read nst rotary movement. provided at its inner face with an annular recess 8, surrounding the threaded boltopening vators, lplows, etc., and the flange 5 of the 9 and the ratchet face 2, which is arranged l is adapted to permit le of eflectually preunscrewed Wit moved from the bolt The flange 5, which the locking ring, the construction and it ta ers transversely the with the inner tapered flange are construction, within ing 6 of the fish plat he d ceives the lockin nut and the fish pl Fig. 2 is a Furthermore, as

greater than the Fig. 3 is a detail ring, the resiliency Fig. 4 is a denut.

oblong or elliptical o necessary to provide Although the nut ange 5,

ock nuts, such as br split loc the nut to be readily a wrench without injuring the locking mechanism. By this construc tion the nut may be readily placed on or re- 10. extends inwardly from is curved transversely to conform to the configuration of the bolt, and

from the inner face of ocking ring. The inner face of the curved flange is arranged in flush relation eri hery or edge of the looking ring, and t e flanged side edges of the adapted to abut against the opposite side walls of the elliptical opene, whereby the ring is stationary. The nut has a smooth flat face surrounding the recess, which wholly reg ring so that the latter is not interposed between the inner face of the ate, and will not be crushed by the clamping action of the nut. the depth of the recess is thickness of the locking of the latter is not impaired by the said clamping action of the By constructing the curved flange 5 in this manner, the lock' with the fish plate by means of the usual ing ring is interlocked penings, and it is not a special construction lock is especially designed for use on rail joints having fish plates, equipped with elliptical openings, yet it will ily apparent that the nut lock is ap- The nut is plicable to various constructions requiring idges, machines, cultiing ring will engage a suitable opendentally unscrewlng, and at the same time it on the fish plate to cooperate with the lock Y ing washer to eifect this result.

ing in the surface or part against Which the locking ring is placed.

Having thus fully described my invention, What I claim as new and desire to secure by Letters Patent, is

1. In a nut lock, the combination with a fish plate having an oblong opening, and a bolt, of a nut provided in its inner f ace with a recess and having a flat engaging surface surrounding the recess, the latter being provided With a ratchet face, and a split looking ring located Wholly Within the recess to ermit the inner face of the nut to engage the lish plate and provided with a projecting lug to engage the ratchet face of the nut, said locking ring having an inwardly extending flange fitting Within the oblong opening of the fish plate, whereby the locking ring is held against rotary movement.

2. A nut lock including a nut provided in its inner face With a cylindrical recess and having a flat engaging surface surrounding the same, said recess being provided With a with a rounded lug tapered transversely ol' the locking ring to engage the tapered ribs i" I and grooves, said locking ling being 01 a thickness less than the depth of the recess and located Wholly Within the same and provided at its other end with an inwardly extending tapered ilange curved transversely to conform to the configuration. of a bolt and 1 extending in the opposite direction from the lug and arranged to project into the opening in the surface against which the locking ring is placed.

In testimony, that I claim theforegoing as my own, I have hereto atlixed my signature in the presence of two Witnesses.

THOMAS )L MILLS Witnesses 1 CARRIE A. Ross, C. L. Bass. 

